25FT Orange Outdoor String Lighting Set! Choose between Twinkling Bulbs and Steady Burning Bulbs, White Wire or Green Wire Cords, C7 & C9 Size available. Multiple options to choose from: * Choose between Twinkling Bulbs and Steady Burning Bulbs. * Twinkling bulbs have a filament inside the bulb that when heated up by the socket, breaks apart and causes the illusion of a blinking/flashing/twinkling light bulb. * Steady Bulbs stay on continuously while plugged in. No flashing on and off. * 25FT Strings: 12in spacing between each socket * C7 & C9 Available - C-7 (E12), C-9 (E17) Brass base Screw-in Replaceable Bulbs Bulb Specs: * C-7 (E12) or C-9 (E17) brass base sockets.